Hi Jim,
Try Mike Taylor at Lotusbit's he may well have one kicking around. Normally for an air box bigger is better and the standard one is not great.
On an Elite/Éclat air box you have a couple of options - you can fit a standard Lotus or K&N (aftermarket) flat screen type filter inside the airbox but this limits the length of the ram pipes. Alternatively a Pipercross universal (or similar) can be used externally. Will go and take some pics to show what I mean.
Gordon